Mineral Dust Cycle

Mineral Dust Cycle

Mineral dust  aerosols produced  by wind erosion in arid and semi-arid regions contribute for more than 40% of the total annual emissions of tropospheric aerosols. In the atmosphere, these aerosols influence the terrestrial radiative balance and are thus major contributors to climate forcing. Dust deposition is a significant source of nutrients (Fe, P, …) for remote oceanic ecosystems regions, while dust emission contributes to soil loss in source regions. The research activities carried at LISA in this field are mainly focused on the quantification of dust emissions, transport and deposition, in order to assess their radiative and biogeochemical impacts. For this objective, intensive (ground-based and airborne) and longterm field measurements and laboratory experiments are coupled with numerical simulations.

Publications

Jouquet, P., T. Henry-des-Tureaux, Christel Bouet, M. Labiadh, S. Caquineau, H. Aroui Boukbida, F. Garcia Ibarra, V. Hervé, A. Bultelle, and P. Podwojewski

Bioturbation and soil resistance to wind erosion in Southern Tunisia
Geoderma

Saturday 15 May 2021
Labiadh M. T., Gilles Bergametti, Jean-Louis Rajot, Christel Bouet, M. Ltifi, S. Sekrafi and T. Henry des Tureaux

Differences in the efficiency of the vertical transfer of windblown sediment over different ploughed surfaces during wind erosion events
Land

Tuesday 11 May 2021
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News

Les vastes quantités de poussières soulevées au Sahara modifient fortement les bilans énergétiques terrestres, les processus biogéochimiques, la...
Wednesday 10 June 2020
  Front de poussière arrivant sur la ville de Niamey le 4 mai 2020 vers 14h (Photo Aliko Mamane – IRD Niamey)   Le 4 mai dernier, Niamey,...
Thursday 28 May 2020